LOW TEMPERATURE
DRY WELL CALIBRATOR
DRY WELL CALIBRATOR FOR LOW TEMPERATURE APPLICATIONS
The Fluke 9190A Ultra-Cool dry-well calibrator is the most accurate and stable cold temperature dry well calibrator on the market. The dry well is ideal for applications that require strict quality control and regulatory compliance. The 9190A dry well calibrator has a wide temperature range from -95 °C to 140 °C. The dry block covers most pharmaceutical, biotech and food applications. Typical applications are the calibration of temperature sensors used with process control devices such as medical freezers, laboratory refrigerators and freezers, biobanks, steam-in-place (SIP), sterilizers/autoclaves and freeze dryers.
MOST STABLE COLD TEMPERATURE DRY WELL ON THE MARKET
Important parameters for evaluating a dry well calibrator are accuracy, stability and axial as well as radial homogeneity. The Fluke 9190A dry well calibrator offers class-leading temperature stability. It has a stability of ±0.015 °C and a display accuracy of ±0.2 °C over the entire temperature range. If the dry block is used with an external temperature reference, it is accurate to ±0.05 °C. The active control of the heating zone is used to compensate for temperature differences between the zones. This minimizes axial or vertical temperature gradients.
The dry well calibrator is suitable for clean rooms as the 9190A is small and weighs only 16 kg. Built-in handles on the front and back make it easy to carry. The clean room stays clean as there is no risk of spillage and the dry block does not give off any vapors.
Fluke dry well calibrator 9190A
Calibrator display shows when calibration temperature is stable
AUTOMATED CALIBRATION WITH UP TO EIGHT SETPOINTS
All controls and inputs are easily accessible on the front panel. With the temperature ramp and holding time function, the 9190A dry well calibrator is ramped up to the programmed target temperatures and stabilized so that data can be recorded easily and automatically during calibration. The stability display shows when the block temperature is stable within the limits defined by the user.
USB and RS232 communication interfaces allow remote control of the dry well from a computer.
OPTIONAL PROCESS ELECTRONICS
The 9190A cryogenic dry well calibrator is available with optional process functions. These include a 4..20 mA measuring input and a 24 V DC supply voltage. An input for PRTs and RTDs in 4-wire connection enables the connection of 4, 3 or 2-wire PRTs or RTDs with an accuracy of ±0.02 °C. A thermocouple input accepts standard mini-jack plug thermocouples.
An input for the reference thermometer reads its measured values with an accuracy of ±0.01 °C at -95 °C. The temperature control of the dry block 9190A can thus be transferred from the internal sensor to the external reference probe. This feature minimizes errors due to axial temperature gradients, especially when the reference thermometer is inserted to the same depth as the unit under test. This is particularly relevant for calibrations of short temperature sensors that do not reach to the bottom of the insert hole.
Connection for external reference and sensor under test
FLUKE CALIBRATION
Bakrona is the authorized representative of Fluke Calibration for industrial temperature calibration in Switzerland and Liechtenstein. We offer our customers in the pharmaceutical, biotech, aviation and food industries a comprehensive service. From advice on new devices to revision and calibration of existing calibrators and references for the parameters temperature, pressure and relative humidity.
SPECIFICATIONS CRYOGENIC DRY WELL 9190A
| Technical Specifications | Dry Block Calibrator Ultra Cool 9190A |
|---|---|
| Temperature range at 23°C | -95 °C to 140 °C |
| Display accuracy | ±0,2 °C full range |
| Accuracy with external reference | ±0,05 °C full range |
| Stability | ±0,015 °C full range |
| Axial uniformity at 40 mm (1.6 in) | ±0,05 °C full range |
| Radial gradient | ±0,01 °C full range |
| Operating conditions | 0 °C to 35 °C, 0 % to 90 % |
| Immersion (well) depth | 160 mm (6,3 inch) |
| Well diameter | 30 mm (1,18 inch) |
| Heating time at (ambient temperature 23 °C) | -95 °C to 140 °C: 40 Min. |
| Cooling time (at ambient temperature 23 °C) | 23 °C to -90 °C: 80 Min. |
| 23 °C to -95 °C: 90 Min. | |
| 140 °C to 23 °C: 60 Min. | |
| Stabilization time¹ | 15 min. |
| Resolution | 0,01 °C |
| Size (H x W x D) | 480 x 205 x 380 mm |
| Weight | 16 kg |
| Computer interface | RS-232, and USB serial |
| Temperature calibration software | 9930 Interface-it included |
| Safety | IEC 61010-1, Installation Category II, Pollution degree 2 |
- Portable and robust, suitable for use in clean rooms
- Most stable dry block with a stability of ±0.015 °C over the full measuring range
- Calibration of sensors of any size, shape and length
- Large temperature range from -95 °C to 140 °C covers the essential processes in the pharmaceutical, biotech and food industries
- Optional process electronics allow the connection of an external reference, which can take over the temperature control
- Zone with two heaters to compensate for temperature differences reduces axial temperature gradients
- Different inserts with different bores for different resistance thermometers as well as for thermocouples
